1, the commonly used method is the power supply on the motherboard, turn off the CPU fan interface, boot for dozens of seconds, the CPU will heat, turn off the power, and then take off the radiator is much easier.
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2, you can use a thin blade to carefully cut, but some CPU heat sink is not easy to start.
3, you can use a hair dryer, blow slowly, blow hot, left and right gently twist the radiator.
Be careful not to knock off surrounding components when operating.